\begin{table}[!htbp]                 \fontsize{9}{10}\selectfont                 \caption{Treaty onset}                 \begin{tabularx}{\textwidth}{p{6cm}XXXXXX}                 \toprule                 & (1) & (2) & (3) & (4) & (5) & (6) \\
\midrule
onset               &                     &                     &                     &                     &                     &                     \\
GDP per Capita Raio (host/source)&      -0.861\sym{***}&                     &      -1.108\sym{***}&      -1.961\sym{***}&                     &      -2.710\sym{***}\\
                    &     (0.237)         &                     &     (0.269)         &     (0.233)         &                     &     (0.257)         \\
\addlinespace
Higher Source Polity Score&                     &      -0.388\sym{***}&      -0.441\sym{***}&                     &      -1.101\sym{***}&      -1.342\sym{***}\\
                    &                     &     (0.099)         &     (0.110)         &                     &     (0.159)         &     (0.163)         \\
\addlinespace
GDP per Capita Ratio \(\times\) Middle Eastern Host&                     &                     &                     &       4.352\sym{***}&                     &       4.612\sym{***}\\
                    &                     &                     &                     &     (0.481)         &                     &     (0.501)         \\
\addlinespace
Higher Source Polity Score \(\times\) Middle Eastern Host&                     &                     &                     &                     &       1.667\sym{***}&       1.783\sym{***}\\
                    &                     &                     &                     &                     &     (0.310)         &     (0.310)         \\
\addlinespace
Middle Eastern Host &                     &                     &                     &      -4.565\sym{***}&      -0.150         &      -5.417\sym{***}\\
                    &                     &                     &                     &     (0.600)         &     (0.242)         &     (0.671)         \\
\midrule
\(Pseudo-R^2\)      &       0.021         &       0.014         &       0.024         &       0.029         &       0.021         &       0.040         \\
\(N\)               &      682245         &      670364         &      542830         &      682245         &      670364         &      542830         \\
\bottomrule                  \addlinespace                 \multicolumn{7}{p{\textwidth}}{\fontsize{9}{10}\selectfont \textbf{Note}:}                 \end{tabularx}                 \end{table}
